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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






2. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






3. 19-23 (21) days






4. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






5. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






6. Can survive ~7 days in cow. vast majority <48 hours






7. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






8. 10-37 (21) days






9. 4-6 days






10. Failure to have both testis (gonads) descend






11. 114 days






12. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






13. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






14. What about the sperm for a bull which has been castrated but still has testicles?






15. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






16. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






17. Scar tissue plugs up chambers of udder






18. Failure to have both testis (gonads) descend






19. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






20. Microscopic - make sure not sterile - very few bulls are actually tested






21. Duct through penis that carries sperm and urine






22. Check feet and legs - look for masculine traits in build such as crest and muscling






23. 1. brain function - 2. blood flow - 3. willing female






24. Allows extension of penis without fibro-elastic penis






25. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






26. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






27. 24 hours before end of estrus cycle






28. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






29. Luteolysis happens because of the ____________ hormone






30. Contains and regulates the temp of the testes for sperm production






31. Sperm is produced here






32. Luteolysis happens because of the ____________ hormone






33. Implies the amount of estrogen production






34. (LH) causes female's egg to break (her period)






35. Microscopic - make sure not sterile - very few bulls are actually tested






36. Larger the cow - more milk is produced; smaller the cow - less milk is produced






37. (switzerland) 2nd in size and milk production - most muscle -






38. Days which have increasing daylight hours

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39. Why Dairy calves are fed powdered milk.






40. Superior genes are _______ to multiply






41. Failure to have one testis (gonad) to descend






42. Animals which have many estrous periods per year (ex: cow - sow)






43. 2 month growth cycle. stored in the epididymis of the bull






44. Birthing process (termination of gestation)






45. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






46. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






47. 30 hours after estrus begins






48. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.

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49. Milk is 15% ________ and 85% __________.






50. Duct through penis that carries sperm and urine